Daniel Glöckner:
> To save some stack space, we could do locSaved=loc
> when a new block is parsed and set locMin=min(loc,locSaved) at the end
> of the block. Then in the function epilog we patch the value of locMin
> into the prolog.
Reusing stack space from different sub-blocks would be nice. It's probably not
even that hard to make better use of stack space, though I haven't looked.
While apps generally have lots of stack space, the Linux kernel developers are
moving (have moved?) to 4K blocks for kernel stacks. Wasting stack space might
be a real problem for a tcc-compiled Linux kernel. (I don't think it's a
problem wasting an extra word with alloca(), because those are rare calls
anyway... but automatic variables and sub-blocks are EVERYWHERE.)
> Unfortunately this breaks ({int x=1; x;}).
Sorry, I don't understand that last sentence.
--- David A. Wheeler
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